Why is Firefox not writing a new file when I open or close a tab? Is there anything I can do right now do get diagnostics on this problem? I believe that tomorrow I may be installing Windows patches and have to reboot, and restarting Firefox will lose all diagnostic data. Thanks.

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Hello,
I have Firefox 68.0.2 installed on W7.
I discovered that since recently network.http.spdy.enabled always reset to false ...
tried to solve by following different s… (閱讀更多)

Hello,
I have Firefox 68.0.2 installed on W7.
I discovered that since recently network.http.spdy.enabled always reset to false ...
tried to solve by following different solutions described on mozilla website ...
tried to solve by reinstalling completely firefox software ...
tried to solve by deleting completely the Mozilla User Roaming profile ... C:\Users\XXX\AppData\Roaming\Mozilla\Firefox\Profiles\ ...
... but nothing change/fix ... network.http.spdy.enabled is always to false and network.http.spdy.enabled.http2 is always to true with the consequence that google, cloudflare, ... websites are no longer working with http/2.
Is that a known issue ?
Thank You in advance for your help
Best Regards,
Vincent

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I refreshed my Firefox but the bookmark file the Help Document said would be in the Old Firefox data folder is not there. As you can see in the image I do not have a file… (閱讀更多)

I refreshed my Firefox but the bookmark file the Help Document said would be in the Old Firefox data folder is not there. As you can see in the image I do not have a file called "places.sqlite". I only refreshed Firefox under the indication that I would not lose any of my bookmarks (they would be saved and I could get them back).

As far as I can tell, this is mainly a Windows 7 problem. I have done a fair bit of testing with gifs I've made myself, and while I don't exactly know how gif "encoding" or whatever works, it seems to be a problem with how Twitter converts certain gif versions.

If I make a gif with Aseprite 1.2.13-x64 the gifs do not work, and show up as black. However you can still download them as a video, reupload them, and then they work, which is kinda weird but I assume twitter re-converts the videos into something else.

However if I make the same gif with Aseprite 1.2.9 which is at least a year older, they work on Twitter.

Using MediaInfo to check the files of the videos in question they say that they are using AVC (Main@L5.2) (CABAC / 4 Ref Frames), while the "gifs" (yes I know that they are just videos on Twitter) that DO work are AVC (Main@L5).

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After following all the suggestions found by searching video autoplay, Firefox currently still autoplays videos with the sound muted. This is in websites other than thos… (閱讀更多)

After following all the suggestions found by searching video autoplay, Firefox currently still autoplays videos with the sound muted. This is in websites other than those like YouTube, such as news websites and the like. What I REALLY want is to COMPLETELY PREVENT automatic playback of any of these videos, and if necessary, whitelist domains like YouTube to allow autoplay. Is this even feasible?

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Temporary Extensions not work
he file at moz-extension://ceb13d04-2561-4ec3-9c55-24fa6adf39b7/manifest.json is not readable.
It may have been removed, moved, or file per… (閱讀更多)

Temporary Extensions not work
he file at moz-extension://ceb13d04-2561-4ec3-9c55-24fa6adf39b7/manifest.json is not readable.
It may have been removed, moved, or file permissions may be preventing access.

Loading failed for the <script> with source “moz-extension://08d5f524-4730-47a6-86f7-ce36ed98acb1/background.js”.

on windows first i installed firefox : release 68 and then i tried developer edition 70.0b1, same problem , search and lookup many documents and threads for many hours , nothing get help.

finally i tried move the file from a: to c: , it works!!!

but i still not clearly know what caused the problem. the driver a: is a ramdisk. windows work on it well. is FF not recognize driver a: or not for ramdisk?
the resource about this not so much, i wrote here also hope to save times for somebody with same problem

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As of this morning, I cannot get Firefox to work. I am using Windows 7. I click to start firefox and it looks like the program starts. It opens a Window with the minim… (閱讀更多)

As of this morning, I cannot get Firefox to work. I am using Windows 7. I click to start firefox and it looks like the program starts. It opens a Window with the minimize, maximize, and close buttons but the window contents are blank and the load icon appears. I can minimize and maximize the window but I cannot end the program. If I use CTRL-ALT-DEL, I can see that firefox.exe is running but I cannot end the task by selecting End Process. If I try to start another instance of Firefox, I get a warning box saying "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window."

Nothing I try will end the process.

I uninstalled and re-installed Firefox but the problem persists. I tried doing a fresh install with all previous add-ons and whatnot ignored but it still won't run. I've tried running it with the anti-virus disabled as well as with Windows in Safe Mode but it won't work.

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Under options, I have Firefox set to restore my previous session when it reopens. Most of the time it does this just fine, but twice this summer it has lost all of my pr… (閱讀更多)

Under options, I have Firefox set to restore my previous session when it reopens. Most of the time it does this just fine, but twice this summer it has lost all of my previous tabs. I read about, and found the recovery.jsonlz4 and recovery.baklz4 files, but they include only the tabs from the current session, not any of the former tabs. I often have dozens to hundreds of tabs open, and this is mightily annoying. Any ideas why this happens, how to prevent it in the future, and is there any hope of finding those lost tabs? I'm strongly considering ditching Firefox for another browser.

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This is on a Windows 7 Enterprise Lenovo laptop. When I open Firefox, I get a blank tab and after about 15 seconds I get the "Gah! Your tab crashed!". If I restore the … (閱讀更多)

This is on a Windows 7 Enterprise Lenovo laptop. When I open Firefox, I get a blank tab and after about 15 seconds I get the "Gah! Your tab crashed!". If I restore the tab, the error comes back. If I boot the computer in Safe Mode or Safe Mode with Networking, it works fine.

I've removed the AV from the system, I've removed and completely deleted all Firefox folder and created a new Windows profile. No change.

I've tried turning off HW acceleration. I'm using the latest version (x64).

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I am having a problem logging onto my wifi admin site. For a few years it opened with no problems, but recently all I get is the little spinning cursor on a grey backgro… (閱讀更多)

I am having a problem logging onto my wifi admin site. For a few years it opened with no problems, but recently all I get is the little spinning cursor on a grey background. The address is http://192.168.0.1/html/home.htm
I am using Windows 7 32bit.
The same problem has also happened on my Huawei Nova running Android version 7 EMUI Version 5.0.3.
I have followed instructions in support, and made the suggested changes in about:config. I have also uninstalled and reinstalled Firefox. I have also tried Reset. Any suggestions?
Thanks
Karl

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Prior to the last update, whenever I had finished or cancelled downloading a file, I would go to the "All Downloads" page and click "Clear All Downloads" to get rid of an… (閱讀更多)

Prior to the last update, whenever I had finished or cancelled downloading a file, I would go to the "All Downloads" page and click "Clear All Downloads" to get rid of any that were done and they would go away. Now they don't anymore. Is there a different way of doing this?

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Issues in downloading the excel file from my application in latest version of the Firefox 68.0.1.In Previous version up-to Firefox 67 it works.
When i click on the "Save"… (閱讀更多)

Issues in downloading the excel file from my application in latest version of the Firefox 68.0.1.In Previous version up-to Firefox 67 it works.
When i click on the "Save" or "Open" ,the popup disappears.
The Second POPUP also disappears when click on "OK"

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I've had a really odd issue with Firefox that has happened on my Windows 7 Ultimate machine. I can run the exe but it just sits there running in the background but never … (閱讀更多)

I've had a really odd issue with Firefox that has happened on my Windows 7 Ultimate machine. I can run the exe but it just sits there running in the background but never loads. I can see it in Process Explorer and can attempt to kill it with Process Explorer but it refuses to fully close. When killed it sits as a process that has no stacks visible for it. You can see one loan thread running that appears to be keeping it going without being able to close it.

I've uninstalled it several times and reinstalled but no joy, it continues to behave the same.

Screenshots are of Firefox in its dead process state. Where it appears to still be running yet isn't. Other shots are of it running but not usable. And an odd unsigned .dll is running.

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This dirty trick required to move a single bookmark folder from one Firefox profile to another stopped working for me for some reason. I tried different firefox versions,… (閱讀更多)

This dirty trick required to move a single bookmark folder from one Firefox profile to another stopped working for me for some reason. I tried different firefox versions, including the one from portableapps.com, I tried starting the second instance with -no-remote switch. Nothing worked. When I tried drag&drop between the instances there was the blue feedback dash indicating the place where the folder was going to be dropped in the target Library window. But nothing happened. I tried holding Ctrl as well, also using Ctrl+C - Ctrl+V key combinations.

Is this a known issue? Has a recent version of Firefox removed this ability?

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I'll leave my PC alone and out of no where the firefox has crashed box will have pop up. This time I had TWO open and I havn't even use firefox in over 8 hours so how is … (閱讀更多)

I'll leave my PC alone and out of no where the firefox has crashed box will have pop up. This time I had TWO open and I havn't even use firefox in over 8 hours so how is it crashing IF i don't have it open seem slike they have somthing running when it shouldn't

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Hello,
I have been using these products with no issues for as long as I can remember. Yesterday, Firefox started crashing when typing anything in the address bar. I tri… (閱讀更多)

Hello,

I have been using these products with no issues for as long as I can remember. Yesterday, Firefox started crashing when typing anything in the address bar. I tried to self diagnose and created a new profile. Now that does not happen but it still crashes. I cannot access Add-ons in an attempt to disable them.

Also, Thunderbird crashes when clicking on an email to preview.
Then I figured perhaps this is a Mozilla issue so I tried to Open a Tor Browser which uses Firefox Quantum, and guess what? It crashes also.

Could one of the windows updates have caused this? Not sure what to do.

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I noticed a few months back that Firefox quantum 65.0.2 (64 bit) uploads are extremely slow. A 186kb image that is uploaded instantly in Chrome or Firefox developer editi… (閱讀更多)

I noticed a few months back that Firefox quantum 65.0.2 (64 bit) uploads are extremely slow. A 186kb image that is uploaded instantly in Chrome or Firefox developer edition (65.0b11 64 bit) takes about 30-45 seconds in quantum, a 900kb image jumps to 14% when I hit upload, then super slowly climbs up by 2%-4% at a time, finally finishing the upload 3 minutes later, and by the time the upload finishes the google captcha I entered has expired and it tells me to retry the upload. The same 900kb image uploads in 2 seconds on chrome and firefox dev. Also some websites like twitch.tv are super slow to load, not even a video stream, the homepage takes about 20 seconds to load, then another 30 seconds for the video to start playing, while the site loads and starts playing the homepage video within a few seconds on chrome and firefox dev.
I've tried everything, launching firefox in safe mode, reinstalling firefox and trying with no plugins, switching between system proxy settings and no proxy. Is there anything else I can try? Super annoying having to launch chrome every time I need to upload something.